1. ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Qld 4811, Australia
2. Institut de Recherche pour le Développement (IRD), BP 50172. 97492 Ste Clotilde Cedex, Reunion Island, France
3. Department of Environment and Conservation, 17 Dick Perry Ave., Kensington, Perth, WA 6151, Australia
4. Oceans Institute, School of Plant Biology, University of Western Australia, Crawley, WA 6009, Australia
5. Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory, Lowestoft NR33 0HT, and School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, UK
6. Laboratoire LIVE, Université de la Nouvelle‐Calédonie, BP R4, 98851 Nouméa Cedex, New Caledonia
7. Australian Institute of Marine Science, PMB 3, Townsville MC, Townsville, Qld 4810, Australia
8. Marine Programs, Wildlife Conservation Society, Bronx, NY 10460, USA
9. Department of Zoology, Stockholm University, S‐106 91 Stockholm, Sweden
10. School of Marine Science and Technology, Newcastle University, Newcastle‐upon‐Tyne NE1 7RU, UK